Metal tank.



PATENTED SEPT.'6,' 1904.

E. NORQUIST.-

METAL TANK APPLIOATION FILED MAB. 9, 1904. N0 MODEL.-

' INVE TOR.

BY 0AM ATTORNEY.

UNITED STATES Patented September 6, 1904.

PATENT OFFICE.

METAL TANK.

SPECIFICATION forming part of Letters Patent No. 769,271, datedSeptember 6, 1904.

Serial No. 197,218.

, Application filed March 9,1904.

T0 alliuhom it may concern.-

do declare the following tobe a full, clear, and

exact description of the invention, such as will enable others skilledin the art to which it appertains to make'and use the same, referencebeing had to the accompanying drawings, and

to the figures of reference marked thereon,

which form a part of this specification.

My present invention relates to metal tanks, and has for its object toprovide a means for bracing the upper rim of the tank in such a manneras to render the use of bolts or rivets unnecessary without decreasingthe rigidity of the tank or rendering it liable to collapse. In this waya tank may be constructed with quite a saving of time, labor, andexpense in comparison with the ordinary method of construction. I 7

My invention will presently be more fully described, and pointed out inthe claim, reference being had to the accompanying drawings,

forming part of this specification, in which like reference-numeralsrefer to like parts throughout the several Views, and in which Figure 1is a side view of a tank constructed according to my method, parts beingbroken away to show the pipe and inner surface of the tank. Fig. 2 is anenlarged detail View of a portion of the tank and pipe. Fig. 3 is anenlarged detail view of the pipe, showing the means for joining the endsof same.

Referring more in detail to the drawings, 1 is the outer casing or drumof a metal tank, near the upper edge of which is provided a corrugation2. Above corrugation 2 casing (N0 model.)

1 is bent or corrugated to form a semicircular groove or recess 3, inwhich is placed-a pipe 4. Fitting within the opening in one end, 5 or 6,of pipe at and held in place by means of an internal projection 7 or 8in said pipe is a pin 9. When pipe 4 is placed in the groove 3, theportion of pin 9 projecting from one end of the pipe is inserted in theopening in the opposite end thereof and forced against an internalprojection within that end as said ends of the pipe are broughttogether. The upper edge of the casing is then made to fit snugly aroundpipe 4:, forming a continuous brace for the top of the tank, therebymaking it firm and substantial. The bottom of the tank may beconstructed in any suitable manner, as my invention only has referenceto the parts described.

I do not wish to be understood as limiting myself to the exact detailsof structure herein shown and described, inasmuch as the same formed bysaid corrugations, and a pin mounted in the ends of said tube'andadapted to bear against said projections.

In testimony whereof I afiix my signature in presence of two witnesses.

EMANUEL E. NORQUIST.

Witnesses:

J. A. MoLANE, HARRY J. LORING.

